نتایج جستجو برای: organic acid

تعداد نتایج: 924792  

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2002
Isamu Fujiwara Mizuo Maeda Makoto Takagi

preparing a resin to recognize a target molecule,1 since it needs no precise design for preparing host compounds (supramolecules), such as crown ethers, cryptands, and cyclodextrins. Many imprinted resins have been prepared as sensors2 and for separating herbicides3 and enantio-isomer compounds.4 We have successfully prepared imprinted resins by a surface imprinting method for metal-chelation u...

2013
Geoffrey AlexAnder AiKen

Objective: To determine how the balance between mineral base, and carbonic and organic acids is altered to cause metabolic acidosis in preterm infants. Study Design: Mineral balance and arterial blood measurements of 3 groups of preterm infants given 5 different Total Parenteral Nutrition (TPN) regimens were analyzed. Mineral base was measured as the difference between mineral cations and anion...

حضرتی, صادق, عبداله زاده, حسین, فضل زاده, مهدی,

Background and purpose: Trihalomethanes and haloacetic acids are formed through chlorination of waters containing natural organic matters and pose potential health problems. So, it is necessary to remove humic acid as the most significant natural organic matter in water. The aim of this study was to evaluate the efficiency of catalytic ozonation in removal of humic acid in presence of local...

ژورنال: یافته 2013
ابراهیم‌زاده, فرزاد , خلخالی‌راد, امیرحسین , غیاثوند, علیرضا , فلاحی, ابراهیم ,

Background: Apple is the most consumed fruit in many countries of the world and has very important role in individual's diet and health. The aim of this study was to determine the vitamin C (Ascorbic acid), organic acids (citric acid and malic acid), and phenolic compounds concentrations of apple cultivars grown in Khorramabad and Boroujerd cities. Materials and Methods: At this cross-sectiona...

خوشگفتارمنش, امیرحسین, افیونی, مجید , هفت برادران, شیرین ,

Zinc (Zn) deficiency in human, which results from diets low in bioavailable zinc, could be eliminated by increasing readily plant-available Zn in soil. Root exudates and organic acids released during decomposition of soil organic matter can affect the availability of Zn. Thus, this hydroponic experiment was conducted to investigate the effect of some chelates on Zn uptake and translocation in t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی نساجی 1386

در این پروژه تاثیر رنگزاهای طبیعی و دندانه ها بر مختصات رنگی و خصوصیات حفاظت uv کالای پشمی بررسی شده است. برای رسیدن به این منظور دندانه های سولفات آهن، سولفات مس، نیترات نقره، نیترات روی، سولفات روی، سولفات آلومینیوم و کلرید قلع و رنگزاهای روناس، وسمه، اسپرک، پوست گردو، پوست انار، برگ مو و حنا انتخاب شده اند، و همچنین اثر غلظت دندانه و اسید های آلی نیز مورد بررسی قرار گرفته اند. رفتار انعکاس ط...

Journal: :Journal of plant physiology 2011
Sergio Jiménez Nathalie Ollat Catherine Deborde Mickaël Maucourt Rubén Rellán-Álvarez María Ángeles Moreno Yolanda Gogorcena

Iron deficiency induces several responses to iron shortage in plants. Metabolic changes occur to sustain the increased iron uptake capacity of Fe-deficient plants. We evaluated the metabolic changes of three Prunus rootstocks submitted to iron chlorosis and their different responses for tolerance using measurements of metabolites and enzymatic activities. The more tolerant rootstocks Adesoto (P...

2010
Sheikh Adil Tufail Banday Gulam Ahmad Bhat Masood Saleem Mir Manzoor Rehman

The aim of the study was to determine the effect of dietary supplementation of organic acids on the performance, intestinal histomorphology, and blood biochemistry of broiler chicken. The birds in the control (T(1)) group were fed the basal diet whereas in other treatment groups basal diet was supplemented with 2% butyric acid (T(2)), 3% butyric acid (T(4)), 2% fumaric acid (T(4)), 3% fumaric a...

2006
Annmarie G. Carlton Barbara J. Turpin Ho-Jin Lim Katye E. Altieri Sybil Seitzinger

[1] Aqueous-phase oxidation (in clouds and aerosols) is a potentially important source of organic aerosol and could explain the atmospheric presence of oxalic acid. Methylglyoxal, a water-soluble product of isoprene, oxidizes further in the aqueous phase to pyruvic acid. Discrepancies in the literature regarding the aqueous-phase oxidation of pyruvic acid create large uncertainties in the inclo...

2000
GEORGE W. PUCHER

It has been known since the work of Mayer (1) in 1875 that the thick succulent leaves of many plants of the family Crassulaceae become enriched in titratable organic acids during the night and diminish in acid content when the leaves are illuminated. An analogous diurnal variation in acidity has been observed in a number of other succulents, and occasionally in species of different growth habit...

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